Bed foundation



FIG. 1 is a perspective view of a bed foundation showing the present design in a position of use;

FIG. 2 is an enlarged detail view of the bed foundation of FIG. 1;

FIG. 3 is a top view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a perspective view of a second embodiment of the bed foundation of the present design; and,

FIG. 7 is a top view thereof.

The broken lines in FIG. 1 depict portions of the bed foundation that are not included in the claim and indicate the outer limits to the claim. The broken lines in FIGS. 2-7 represent the boundaries of the claim and form no part thereof. 

CLAIM I claim the ornamental design for a bed foundation, as shown and described. 